Description  Claims  Drawing  Cited references 

WO0037009A   [0032]  [0048] 
US4940464A   [0032] 
US5766389A   [0032] 
US6645190B   [0032]  [0048] 
US4704116A   [0036] 
US5486166A   [0039] 
US5490846A   [0039] 
US5820973A   [0039] 
US4100324A   [0085] 
US5284703A   [0085] 
US5350624A   [0085]